Product Hierarchy
Product Hierarchy

79842ELZ - RS-485, 2 Pr #24 Str TC, FoamPE Ins, OS+TC Brd, LSZH Jkt, Eca


RS-485, 2 Pair, 24 AWG stranded (7x32) Tinned Copper conductors, Foamed Polyethylene insulation, twisted pairs, overall Beldfoil® (100% coverage) + Tinned Copper braid shield (65% coverage), 24 AWG stranded Tinned Copper drain wire, LSZH jacket, CPR Eca

Product Overview

Suitable Applications: RS-485, POS; Computer communications; Low Voltage Analog Signals (4-20ma, 0-10v, ...); Low Voltage Digital Control (24v, …); Line Level Audio; Panel Wiring; serial communication (RS-485 standard) comprising of PLCs, VFDs, HMIs, motors, RTU, SCADA, etc. within noisy environments over long distance, etc.

Construction Details

Conductor
ElementNo. of ElementsSizeStrandingMaterial
Pair(s)224 AWG7x32TC - Tinned Copper
Insulation
ElementMaterialNom. ThicknessNom. Insulation DiameterColor Code
Pair(s)PE - Polyethylene (Foam)0.40 mm (0.016 in)1.40 mm (0.0551 in)White/Blue & Blue/White, White/Orange & Orange/White
Outer Shield
Shield TypeMaterialCoverageDrainwire Type
TapeBi-Laminate (Alum+Poly)100%24 AWG (7x32) TC
BraidTinned Copper (TC)65%
Outer Jacket
MaterialNom. ThicknessNom. Diameter
LSZH - Low Smoke Zero Halogen (Flame Retardant)0.6 mm (0.024 in)6.90 mm (0.272 in)
Overall Cable Diameter (Nominal): 6.90 mm (0.272 in)

Electrical Characteristics

Electricals
ElementNom. Conductor DCRNom. Capacitance Cond-to-CondNom. Capacitance Cond-to-Other (Conds + Shield)Nom. Characteristic ImpedenceNom. Velocity of Prop.Max. Current
Pair(s)78.7 Ohm/km (24.0 Ohm/1000ft)40 pF/m (12 pF/ft)78 pF/m120 Ohm66%2.1 Amps per Conductor
Nom Outer Shield DCR: 7.2 Ohm/km (2.2 Ohm/1000ft)
High Frequency (Nominal/Typical)
ElementFrequency [MHz]Nom. Insertion Loss (Attenuation)
Pair(s)11.97 dB/100m (0.600 dB/100ft)
Voltage
Voltage Rating
300 V

Mechanical Characteristics

Temperature
OperatingInstallationStorage
-20°C To +70°C-10°C To +70°C-20°C To +70°C
Bend Radius
Stationary Min.Installation Min.
35 mm (1.4 in)70 mm (2.8 in)
Max. Pull Tension: 395 N (88.8 lbf)
Bulk Cable Weight: 46 kg/km (31 lbs/1000ft)

Standards and Compliance

Environmental Suitability: Indoor - Euroclass Eca, Indoor, Non-Halogenated
Flammability / Reaction to Fire: IEC 60332-1-2
CPR Compliance: CPR Euroclass: Eca
CENELEC Compliance: EN 50290-2-20
European Halogen Free Standards: IEC 62821-1 Halogen Free Compliance = Yes, IEC 60754-1 - Halogen Amount = Zero, IEC 60754-2 - Halogen Acid Gas Amount - Max. Conductivity = 2.5 µS/mm, IEC 60754-2 - Halogen Acid Gas Amount - Min. pH = 4.3, IEC 61034-2 - Smoke Density Min. Transmittance = 60%
European Directive Compliance: EU CE Mark, EU Directive 2015/863/EU (RoHS 2 amendment), EU Directive 2011/65/EU (RoHS 2)
UK Regulation Compliance: UKCA Mark
Other Standard Compliance(s): DMX-512

History

Update and Revision: Revision Number: 0.7 Revision Date: 11-28-2025
Date: 2012-05-10
Belden-NPI-RS-485-Product-Bulletin-2022-04.pdf
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